Abstract
Similar to any restorative material, successful cementation of zirconia is important for the clinical success of the restoration. Good adhesion is important for high retention, prevention of microleakage, and increased fracture and fatigue resistance, and is mediated by the use of resin-based cements.
Chemical bonding to zirconia ceramics involves the use of various couplers. The primer/luting agents containing phosphate ester monomer (MDP) have been suggested. The presence of other acidic monomers such as 4-methacryloxyethyl trimellitic anhydride (4-META), and thiophosphoric acid methacrylate (MEPS) permits additional chemical bond with zirconia. However, although these are currently available for chemical bond between resin cement and zirconia, their main disadvantage is their low bond strength, when compared with porcelain.
Several studies suggested the use of silane coupling agents in coating applications to promote adhesion between inorganic surfaces and polymeric molecules.
Therefore, the purpose of this study was to evaluate the effects of silane primer concentrations on shear bond strength between resin cements and zirconia.
